.banner {
    width: 100%;
    height: 444px;
    background: url(https://s10.mogucdn.com/mlcdn/c45406/200518_482bj515c0a2lb0abg0b60hl2h5l8_1134x440.jpg) no-repeat center;
    background-color: #cceae2;
    border-top: 2px solid #FF4466;
}

.banner_top {
    position: relative;
    width: 257px;
    height: 40px;
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    overflow: hidden;
    background: url(https://s10.mogucdn.com/mlcdn/c45406/181030_684h0hal8l370584ki2bl2lfea4ga_257x40.png) no-repeat;
    a {
        position: absolute;
        left: 47px;
        height: 40px;
        line-height: 40px;
        font-size: 18px;
        color: #fff;
    }
}

.banner_menu {
    position: relative;
    width: 256px;
    height: 442px;
    background-color: rgba(235, 229, 260, 0.9);
    li {
        height: 34px;
        line-height: 34px;
        overflow: hidden;
        font-family: 'PingFang SC';
        text-align: center;
        color: #333;
        font-weight: 700;
        border-left: 2px solid transparent;
        .menu_text {
            display: block;
            a:not(:first-child) {
                margin-left: 30px;
            }
            a:hover {
                color: #FF4466;
                text-decoration: underline;
            }
        }
        &:hover {
            border-color: #FF4466;
            background-color: #fff;
        }
    }
    .sub_menu {
        position: absolute;
        width: 600px;
        height: 442px;
        padding: 30px;
        top: 0;
        left: 255px;
        background-color: wheat;
        text-align: left;
        display: none;
        font-size: 20px;
        a:hover {
            color: #FF4466;
            border-bottom: 2px solid #FF4466;
        }
    }
}